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Finding the Third Proportional to 15,024 and 21,639

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Solution

The third proportional to 15,024 and 21,639 is: 31,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,024 : 21,639 = 21,639 : x
  2. Step 2: Convert to fraction form
    15,024/21,639 = 21,639/x
  3. Step 3: Cross multiply
    15,024x = 21,639 × 21,639
  4. Step 4: Simplify right side
    15,024x = 468,246,321
  5. Step 5: Solve for x
    x = 468,246,321/15,024
  6. Step 6: Final answer
    x = 31,166.55

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.